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. Author manuscript; available in PMC: 2024 Nov 15.
Published in final edited form as: Lancet. 2020 Dec 2;397(10269):129–170. doi: 10.1016/S0140-6736(20)32290-X

Figure 4. Population-weighted average changes in the number of days of exposure to very high or extremely high risk of wildfire in 2016–19 compared with 2001–04.

Figure 4

Large urban areas with a population density of 400 people per km2 or more are excluded. Wildfire risk is based on the Fire Danger Index, which rates risk on a scale from 1 to 6 (1 is very low; 2 is low; 3 is medium; 4 is high; 5 is very high; and 6 is extremely high). The higher the number, the more favourable the meteorological conditions are to trigger a wildfire.